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| Date | Name | Title | Action | No Shares | Price Per Share |
|---|---|---|---|---|---|
Insider Transactions For PRTA | |||||
| 2026-05-15 | Ekman, Lars | Director | Purchased | 27000 | $0.00 |
| 2026-05-15 | Selkoe, Dennis J. | Director | Purchased | 27000 | $0.00 |
| 2026-05-15 | Welch, Daniel G | Director | Purchased | 27000 | $0.00 |
| 2026-05-15 | Cooke, Shane | Director | Purchased | 27000 | $0.00 |
| 2026-05-15 | Collier, Richard T | Director | Purchased | 27000 | $0.00 |
| 2026-05-15 | Dunn, William H. Jr. | Director | Purchased | 27000 | $0.00 |
| 2026-04-10 | Kingston, Anne Evans | Chief Strategy Officer | Purchased | 100000 | $0.00 |
| 2026-03-03 | Nguyen, Tran | Chief Strategy Officer and CFO | Purchased | 230000 | $0.00 |
| 2026-03-03 | Malecek, Michael J | Chief Legal Officer | Purchased | 190000 | $0.00 |
| 2026-03-03 | Kinney, Gene G. | Director, President and CEO | Purchased | 520000 | $0.00 |
| 2026-03-03 | Zago, Wagner M. | Chief Scientific Officer | Purchased | 190000 | $0.00 |
| 2026-03-03 | Walker, Karin L | Chief Accounting Officer | Purchased | 150000 | $0.00 |
| 2026-03-03 | Smith, Brandon S. | Chief Operating Officer | Purchased | 190000 | $0.00 |
| 2026-03-03 | Swanson, Chad J. | Chief Development Officer | Purchased | 190000 | $0.00 |
| 2025-07-28 | Smith, Brandon S. | Chief Operating Officer | Purchased | 130000 | $0.00 |
| 2025-07-28 | Malecek, Michael J | Chief Legal Officer | Purchased | 80000 | $0.00 |
| 2025-07-28 | Kinney, Gene G. | Director, President and CEO | Purchased | 140000 | $0.00 |
| 2025-07-28 | Zago, Wagner M. | Chief Scientific Officer | Purchased | 85000 | $0.00 |
| 2025-07-28 | Walker, Karin L | Chief Accounting Officer | Purchased | 25000 | $0.00 |
| 2025-07-28 | Swanson, Chad J. | Chief Development Officer | Purchased | 85000 | $0.00 |
